Fig. 1
From top to bottom the parameters shown are Dst index, \(B_{\text{z}}\) magnetic field (nT), E electric field (mV/m), proton density N (1/cm3), solar wind dynamic pressure P (nPa), flow speed v (km/s) and auroral electrojet AE (nT) index for March 15–19, 2015 (from NASA NSSDC OMNI data set). The characteristic storm at the intense level (Dst = − 223 nT) on March 17, 2015, has been analyzed. Figure 1 shows the OMNI data set from 00 UT March 15, 2015, to 00 UT March 19, 2015. The plot interval covers the storm day (March 17, 2015), 2 days before and 2 days after (120 h) the storm